Thermocouple Wire / Thermocouple Extension Wire

We stock the most reliable thermocouple wire and cable for optimal performance in an array of configurations. Made to stringent material standards, our thermocouple-grade wire offers the top choices in alloy wire type, size, protection and insulation. A thermocouple wire is a duplex wire, meaning two insulated wires of different materials are in one sheath. Each ANSI thermocouple type is comprised of a specific wire pairing that generates signals. For example, Type J cable combines iron and constantan wires. Other commonly deployed thermocouple wiring is identified as E, K, and T. Duplex insulation is color coded according to ANSI MC 96.1-1982. Choose the insulation materials that deliver industrial features – from high temperature capability to optimal noise rejection. Thermocouple materials are dictated by the thermocouple type. Durable fiberglass is used in general and high temperature applications. Economical PVC-insulated wire offers flexibility and affordability. Our most popular insulated wiring categories include:

  • Fiberglass: Features braided fiberglass insulation for intense heat protection, with maximum temperature of 900°F and a stainless steel over-braid option.
  • FEP (Teflon): Insulation for up to 400°F max temperature. Moisture resistance available.
  • PVC: Polymer insulation for up to 220°F.
  • Multi-conductor cable
  • Specialized

Our wiring insulation materials include fiberglass, FEP and PVC. Braided fiberglass exterior insulation serves as a high intensity heat shield in a range of applications. Our fiberglass thermocouple-grade wire withstands temperatures up to 900°F. Order it in Type J and K, with color coding for fast identifications. We make it easier to utilize stock thermocouple wiring to fabricate assemblies or connect a thermocouple assembly to devices, such as a temperature controller. Quickly coordinate your sensing device type to wire type. Examples of our 20-gauge wire, J and K wire include:

Order our best thermocouple wiring with fiberglass, Teflon or PVC insulation. When it comes to thermal system accessories, Hi-Watt has it all! Contact us to learn about the additional wire types we have ready for your installations.

Field-Proven Thermocouple Extension Wire

We offer thermocouple extension wire that has been diligently tested for excellence on the job. Thermocouple wire creates the sensing point for temperature measurements. It differs from extension wire, which extends a signal from the thermocouple to instruments. The insulation material is a key parameter in considering which thermocouple wire to use. Teflon and fiberglass insulation is found in our thermocouple-grade wire, while PVC wire often serves as extension-grade wire for thermocouples.

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Thermocouple Wire Accessories

In addition to our extensive wiring options, we carry thermocouple wire accessories that support a full scope of installations. Hi-Watt can ensure you have the styles of thermocouple connectors and miniature connectors you need. Our wire and extension wire comes in a range of lengths. We also have thermal instrument accessories, such as protection tubes and thermowells. Contact Hi-Watt to get your sensing systems running sooner!

Thermocouple Extension Wire Connects to Controllers

We want to be your premier distributor of thermocouples and complementary thermocouple extension wire. The commercial thermocouple wiring that connects to a controller or a recording device is referred to as extension wire. It’s identified with an X after the ANSI designation. We sell coordinating wire for specific types of devices. We offer an incredible selection of stock extension wire to meet your specialized requirements. Contact the Hi-Watt pros to receive the most reliable products for industrial or electronic applications. Our temperature sensor wires with color coding support fast identifications.

Watlow Thermocouple Extension Wire



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